Visionking Rifle Scope 2-20x44 Riflescope 10 times zoom Side Focus Mil-dot Hunting Tactical Rifle scopes Color Black (same, Low) Common differentiation 30mm tube illuminated Red/Green offer the clearest view for easy target acquisition in both bright and low light situations. Side Focus 10 yards ~infinity,10 times ratio,2x-20x large zoom range Water and fogproof,nitorgen filled high shock resistant,even for high coil rifle,such as 308 338 etc